Monthly outlook for Kiona, WA: average high 96.2°, average low 67.3°. That is 3.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.1 inches. The warmest day looks like 24 August (107.2°), the coolest 10 August (59.6°).
96.2°/67.3°
Average high / low
+3.4°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
93°
91.5°
+0.8°
19 August – 28 August
101.6°
87.5°
+7.8°
29 August – 7 September
at normal
85.2°
—
August records over 66 years
111.2°4 August 1961All-time high
48.6°22 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Prosser (14 mi).
Mon, 1091° / 60°0
91 °
Kiona, Monday, 10 August
Clear. High 91°, low 60°.
Pressure29.88 inHg
Wind4.3 mph W
Humidity22%
Visibility6.2 mi
Dew point43°
Tue, 1196° / 60°0
96 °
Kiona, Tuesday, 11 August
Mostly clear. High 96°, low 60°.
Pressure29.91 inHg
Wind2.9 mph SW
Humidity22%
Visibility6.2 mi
Dew point43°
Wed, 1293° / 65°0
93 °
Kiona, Wednesday, 12 August
Clear. High 93°, low 65°.
Pressure29.83 inHg
Wind5.9 mph SW
Humidity28%
Visibility6.2 mi
Dew point48°
Thu, 1393° / 66°0
93 °
Kiona, Thursday, 13 August
Clear. High 93°, low 66°.
Pressure29.77 inHg
Wind9.5 mph N
Humidity22%
Visibility—
Dew point45°
Fri, 1496° / 71°0
96 °
Kiona, Friday, 14 August
Overcast. High 96°, low 71°.
Pressure29.80 inHg
Wind11.6 mph N
Humidity20%
Visibility—
Dew point45°
Sat, 1598° / 70°0
98 °
Kiona, Saturday, 15 August
Mostly clear. High 98°, low 70°.
Pressure29.80 inHg
Wind17.6 mph SW
Humidity14%
Visibility—
Dew point38°
Sun, 1693° / 65°0
93 °
Kiona, Sunday, 16 August
Clear. High 93°, low 65°.
Pressure29.85 inHg
Wind9.5 mph SW
Humidity16%
Visibility—
Dew point36°
Mon, 1792° / 64°0
92 °
Kiona, Monday, 17 August
Overcast. High 92°, low 64°.
Pressure29.88 inHg
Wind11.1 mph SW
Humidity20%
Visibility—
Dew point40°
Tue, 1887° / 69°0
87 °
Kiona, Tuesday, 18 August
Overcast. High 87°, low 69°.
Pressure29.91 inHg
Wind19.8 mph S
Humidity28%
Visibility—
Dew point48°
Wed, 1994° / 67°0
94 °
Kiona, Wednesday, 19 August
Overcast. High 94°, low 67°.
Pressure29.88 inHg
Wind13.8 mph SW
Humidity30%
Visibility—
Dew point53°
Thu, 2098° / 70°0
98 °
Kiona, Thursday, 20 August
Overcast. High 98°, low 70°.
Pressure29.94 inHg
Wind9.7 mph SW
Humidity22%
Visibility—
Dew point48°
Fri, 21103° / 71°0
103 °
Kiona, Friday, 21 August
Clear. High 103°, low 71°.
Pressure29.91 inHg
Wind7.8 mph SW
Humidity19%
Visibility—
Dew point48°
Sat, 22101° / 70°0
101 °
Kiona, Saturday, 22 August
Partly cloudy. High 101°, low 70°.
Pressure29.94 inHg
Wind4.9 mph W
Humidity14%
Visibility—
Dew point39°
Sun, 23106° / 73°0
106 °
Kiona, Sunday, 23 August
Clear. High 106°, low 73°.
Pressure29.85 inHg
Wind5.1 mph SW
Humidity14%
Visibility—
Dew point42°
Mon, 24107° / 74°0
107 °
Kiona, Monday, 24 August
Clear. High 107°, low 74°.
Pressure29.74 inHg
Wind8.6 mph W
Humidity12%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 62°0.02
86 °
Kiona, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low62°
Average precipitation0.02 in
Chance of precipitation10%
Record high103° (1996)
Record low51° (1960)
Wed, 2687° / 61°0
87 °
Kiona, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low61°
Average precipitation0 in
Chance of precipitation2%
Record high103° (1996)
Record low51° (1993)
Thu, 2787° / 62°0
87 °
Kiona, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0 in
Chance of precipitation7%
Record high101° (1986)
Record low51° (1960)
Fri, 2887° / 62°0
87 °
Kiona, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0 in
Chance of precipitation3%
Record high101° (2023)
Record low51° (1960)
Sat, 2988° / 63°0.01
88 °
Kiona, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low63°
Average precipitation0.01 in
Chance of precipitation3%
Record high100° (2017)
Record low50° (1965)
Sun, 3086° / 62°0.02
86 °
Kiona, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low62°
Average precipitation0.02 in
Chance of precipitation8%
Record high101° (2007)
Record low50° (1966)
Mon, 3185° / 61°0.01
85 °
Kiona, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low61°
Average precipitation0.01 in
Chance of precipitation3%
Record high102° (2022)
Record low49° (1964)
Tue, 0185° / 60°0.01
85 °
Kiona, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0.01 in
Chance of precipitation8%
Record high103° (1987)
Record low49° (1975)
Wed, 0285° / 60°0
85 °
Kiona, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation7%
Record high101° (2022)
Record low49° (1975)
Thu, 0385° / 60°0.01
85 °
Kiona, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0.01 in
Chance of precipitation3%
Record high104° (2025)
Record low49° (1964)
Fri, 0486° / 60°0
86 °
Kiona, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2025)
Record low51° (1969)
Sat, 0585° / 60°0
85 °
Kiona, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1988)
Record low50° (1969)
Sun, 0684° / 59°0.02
84 °
Kiona, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low59°
Average precipitation0.02 in
Chance of precipitation12%
Record high100° (2024)
Record low47° (1960)
Mon, 0784° / 59°0
84 °
Kiona, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low59°
Average precipitation0 in
Chance of precipitation3%
Record high100° (2024)
Record low48° (1960)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Kiona, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Kiona, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.